32results about How to "Short driving time" patented technology

The invention discloses an electronic control dimmer medium with openings on conductive electrode layers. The electronic control dimmer medium comprises two matrix layers, wherein a mixing layer is arranged between the two matrix layers and formed by mixing nearly crystalline liquid crystal and additives, a conductive electrode layer is arranged on one side of each of the matrix layers towards the mixing layer and connected with a circuit drive control device, and one opening is arranged on at least one of the two conductive electrode layers. By means of the openings, compared with the existing electronic control dimmer medium, the electronic control dimmer medium with the openings on the conductive electrode layers reduces working voltage of the nearly crystalline liquid crystal, improves the speed of conversion from a full-transparent state to a mist shading state, and is short in driving time and capable of saving energy. Furthermore, incomplete shadows do not occur under the mist shading state, the whole medium is uniform in shading, and the image display effect is good.

The invention discloses a construction method based on a technology for producing boron isotope by anisole-boron trifluoride, which belongs to the field of isotope separation, and mainly aims at solving the problems such as low yield of boron-10 and incapability of obtaining qualified boron-11 products at the same time in the existing construction method based on the technology for producing boron isotope by anisole-boron trifluoride. The method disclosed by the invention comprises the following steps: continuously purifying raw materials, namely boron trifluoride gas and an anisole liquid, as well as an anisole-boron trifluoride complex before entering a cracking tower, nitrogen gas coming out of the top of a complex gas stripping tower, boron trifluoride gas after cracking, and gas coming out of the top of a first exchange rectifying tower; adding the purified nitrogen gas into a second exchange rectifying tower; adding fresh boron trifluoride gas into the first exchange rectifying tower, wherein boron-10 is not discharged out from the top of the cracking tower and boron-11 is not discharged out from the top of a complexation tower; and after performing system rectification balance for 72-148 hours, converting to the normal production mode. The method has the advantage that the two qualified products, namely boron trifluoride-10 and boron trifluoride-11 can be produced at the same time.

The invention discloses a self generation method of a driving waveform for electrophoresis display equipment. The self generation method comprises calculating the luminance value of each gray scale; gradually increasing the positive voltage or negative voltage time length applied to a pixel electrode from the previous state to form a new driving waveform; driving the electrophoresis display equipment to display images and measure the luminance values; acquiring the luminance values and feeding back the luminance values to a control unit; determining whether the effect of the driving waveform is the required result by means of the control unit; if achieving the expected effect, saving the driving waveform and continuing operation to generate driving waveforms which are transformed from other states; and if not achieving the expected effect, generating a new driving waveform by continuously increasing the time length of positive voltage or negative voltage. The self generation method of a driving waveform for electrophoresis display equipment has the advantages of liberating the labor force and improving the work efficiency through automatic operation of the computer. The generated driving waveform is adaptive to the environment and hardware conditions so that the display effect is better. Compared with a traditional driving waveform, the high frequency driving mode enables human eyes to enjoy higher comfort degree.

The invention provides a starting / stopping control method and system for a powdered coal pressure gasification device. The method and system control purging stop, oxygen system starting, ignition burner starting, startup burner starting as well as coal burner starting of the powdered coal pressure gasification device. The starting / stopping control method and system have the advantages of high automation degree, concise starting / stopping control, safety and reliability, short starting time, and greatly reduced starting expense.